GMAT Prep test.. need help!

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GMAT Prep test.. need help!

by crave165 » Sun Jul 20, 2008 7:40 am
Just took my first GMAT prep test (CD) and am in shock to realize
how bad my quant (not to mention my verbal) is. :x

Anyways will really appreciate if anyone sheds some light to the
following 3 Qs! Thanks!
:D
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1. Which of the following inequalities has a solution set that, when graphed on the number line, is a single line segment of finite length?

(note: <means>=, greater than or equal to)

A. X^4>= 1
B. X^3 <27>=16
D.2<= &#12643;x l <=5
E. 2<=3X + 4 <=6

(Answer is E)


2. For every integer k from 1 to 10, inclusive, the Kth term of a certain sequence is given by
(-1)^k+1 * (1/2^k)

If T is the sum of the first 10 sequences, then T is...

A. greater than 2
B. between 1 and 2
C. between 1/2 and 1
D. between 1/4 and 1/2
E. Less than 1/4


Answer is D


3. The perimeter of a certain isolesces right triangle is 16+ 16 root 2.
What is the length of the hypotenuse in the triangle?

Answer is 16
Source: — Problem Solving |

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by pepeprepa » Sun Jul 20, 2008 2:00 pm
I think one the rules is to post one question by post!

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by vishubn » Sun Jul 20, 2008 10:40 pm
q3: Right iSOSCELES TRIANGLE so the ratio of the triangle wil be 45-45-90 in other words the ratio of the side will be in 1x:1x:sqrt2x

2x+root2 x=16+ 16 root 2
solving x we get x=8root2

that is the ratio of the sides of triangle is
8root2:8root2:16

16 is the answera\

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by vishubn » Sun Jul 20, 2008 10:51 pm
q1:

FOr the limits on the numebr line ! it should span on
either side ! that is on the posiitve and negative side as well

So the only condition which holds good is the option E

P.s. to know more on this try searching the forum on the question u will find it :)

Vishu

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by vishubn » Sun Jul 20, 2008 10:59 pm
Q2

Please fidn the solution below

https://www.beatthegmat.com/gmat-prep-6- ... t1798.html

Vishu

P.s.- try posting one question/post so it makes things easy ! have fun !!